285643560940 has 24 divisors (see below), whose sum is σ = 599861959200. Its totient is φ = 114255427968.

The previous prime is 285643560929. The next prime is 285643560949. The reversal of 285643560940 is 49065346582.

It is not an unprimeable number, because it can be changed into a prime (285643560949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1697736 + ... + 1858384.

It is an arithmetic number, because the mean of its divisors is an integer number (24994248300).

Almost surely, 2^285643560940 is an apocalyptic number.

285643560940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285643560940 is an abundant number, since it is smaller than the sum of its proper divisors (314218398260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285643560940 is a wasteful number, since it uses less digits than its factorization.

285643560940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249561 (or 249559 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 52.

The spelling of 285643560940 in words is "two hundred eighty-five billion, six hundred forty-three million, five hundred sixty thousand, nine hundred forty".